TMD2772

DIGITAL ALS

and PROXIMITY MODULE

TAOS147

E − DECEMBER 2012

18

r

r

Copyright

E 2012, TAOS Inc.

The LUMENOLOGY

r Company

www.taosinc.com

Command Register

The command registers specifies the address of the target register for future write and read operations.

Table 4. Command Register

6

75

4

ADD

2

31

0

COMMAND

COMMAND

TYPE

Reset

0x00

FIELD

BITS

DESCRIPTION

COMMAND

7

Select Command Register. Must write as 1 when addressing COMMAND register.

TYPE

6:5

Selects type of transaction to follow in subsequent data transfers:

FIELD VALUE

DESCRIPTION

00

Repeated byte protocol transaction

01

Auto-increment protocol transaction

10

Reserved — Do not use

11

Special function — See description below

Transaction type 00 will repeatedly read the same register with each data access.

Transaction type 01 will provide an auto-increment function to read successive register bytes.

ADD

4:0

Address field/special function field. Depending on the transaction type, see above, this field either

specifies a special function command or selects the specific control-status-register for following write and

read transactions. The field values listed below apply only to special function commands:

FIELD VALUE

DESCRIPTION

00000

Normal — no action

00101

Proximity interrupt clear

00110

ALS interrupt clear

00111

Proximity and ALS interrupt clear

other

Reserved — Do not write

ALS/Proximity Interrupt Clear clears any pending ALS/Proximity interrupt. This special function is self

clearing.